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•300 Vickers Machine Gun

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•300 Vickers Machine Gun / , c I. •300 VICKERS MACHINE GUN MECHANISM MADE EASY GALE & POL DEN LTD FULLY ILLUSTRATED LONDON ALDERSHOT PRICE 1/6 NET AND PORTSMOUTH PER POST I /8 BOOKS SPECIALLY RECOMMENDED s. d. MIiitary Map Reading, Complete Gulde to. 10th Edition ... 4 6 (By Post, 4/10) CONTENTS.-Maps and Map Readlng--Conventlonal Slgn-ldantlflcation of ·300 VICKERS Points on Map-Seal-HUI Features: Contours,-HIII Features: Gradients and Sectlou-HIII Features: Vlslblll~Topo&raphical Term-The Prismatic Compass -S.ttlns a Map: Flndlns One• Position on a Map-Enlargements and Aeld Sketchlnc-Traverslnc or Prismatic Compus Sketchrnc--Flnding True North: Note on the HorJzoMal Clock Code. Lectures on Battle Training. By Labore. Profusely illustrated MACHINE GUN with photographic plates and line drawings (By Post, 1/8) I 6 CONTENTS.-The Prismatic Com~uerrilla Warfare-Patrols-Night Patrols and Cout Landin-Improvisation-The Sand Table and Cloth Model­ Road Bloc~nlplng-The Individual and Section Stalks-Cover and Camouflage MECHANISM MADE EASY -Booby Traps, Eleven More Lectures on Battle Training. By Labore. Fully illus­ trated with photographic plates and line drawings (By Post, 2/2) 2 0 CONTENTS.-Care of Ar~Zeroing-Flre Control-Practical Theory­ Grenade-Oestruction of Grenade " Blinds "-The Grenade-Appendix- Coaching--Groupln1 and Application Targets-Miniature Rang-Night Firing -Characteristics. Questionnaire: 375 Questions and Answers on Training. fully 3rd Edition. By Major W . P. Lousada, M.C., late Royal Norfolk Regiment •.. .•• ... ... ... (By Post, 1/8) 6 illustrated CONTENTS.-Musketry-Flre Contrc,I-Scouts and Patrols-Judging Distance and Fieldcrafc-Grenad-Automatlc Weapons-Gas-Reports and Messages­ Mlscellaneous Questions and Answers for Battle Platoon and Battle Squad Com­ manders and N.C.Os.-Appreclatlon of a Sltuadon. How to Teach Battlecraft. By Capt. R. Humphrey and Capt. D. ArdiJZOne, Instructors, No. 2 G.H.Q. School. Fully illustrated (By Post, I /2) I 0 CONTENTS.-Personal Concealment-Personal Movement by Day­ Personal Movement by Night-Selection of Line of Advance-Tactical Cross­ Inc of Obstacl-Observatlon Training-Selection of Fire Positions. Notes and Skeleton Orders for Junior Commanders. On linen-lined folding card for pocket ..• (By Post, -/7) 0 6 I Went on a Course. By Q. One. Illustrated. (By Post, 1/8) I 6 This book sets out all the pitfalls which face the potential student " warned for a course." It should prove Invaluable and a creat preliminary step to securing that elusive " D." It Is profusely Illustrated with amusing pen sketches which not only e nlighten the text but give point co the advice In t he book. Fleldcraft and Stealth. The Training of the Soldier in Stalking, Crawling and Patrolling, By Lieut.-Colonel N. A. D. Armstrong, O.B.E., R.M., Commandant Royal Marines Snipers' School Fully illustrated with 44 Photographic lllustra• tlons and Diagram's .. •. •. ••• .. •• • •• . 1 0 CONTENTS.-Method of Conducting a Practical 0emonstratlon-Openlnc Talk-Demonstration without Arms-Stalking with a Rifle-Stealth Patrol­ Demonstration to Illustrate Progressive Training-Final Demonstration: Individual Stal~cout v. Scout. A LDERSH O T Fleldcraft, Sniping and Intelligence. 5th Edition. By Lieut.­ GALE & POLDEN LIMITED Colonel N. A. D. Armstrong, O.B.E., R.M., Commandant The Royal Marine Snipers' School. Fully Illustrated with plates and One Shilling and Sixpence (net) diagrams ... •.• ••• .•. ..• (By Post, 6/6) 6 0 Notes on Individual Fleldcraft. Contains practical and up-to­ (By post, 1/8) date methods for both day and night operations. Fully Illustrated with half-tone plates· •.• •.. .•• •.• (By Post, 1/2) 0 PUBLISHED BY GALE & POLDEN LIMITED Contents PAGE Publishers' Foreword GENERAL DESCRIPTION 4 MECHANISM 9 This book is no. meant to replace the official publications on the gun, but rat~er to be read in conjimction with them BACKWARD MOVEMENT OF MECHANISM 8 FORWARD MOVEMENT OF MECHANISM 10 This booklet on the Vickers Machine Gun was originally written for the Home Guard, STRIPPING 14 and it describes and illustrates the .300 calibre SERVICING THE GUN-REPAIRS AND AD- gun, with which they are armed. JUSTMENTS 20 By studying this handbook with the gun by SIGHTS. 24 his side, so that the actual parts of the gun may be referred to as they are mentioned in TRIPOD MOUNTING 26 the text, the reader will find that he will be FIRING THE GUN 28 able very quickly to grasp the names of all the various parts of the gun and the mechanism, KINDS OF FIRE 29 and to strip and handle the gun and prepare FIRING 31 it for firing in a surprisingly short time. BEFORE FIRING 31 Gale & Polden Ltd. DURING FIRING LONDON & ALDERSHOT AFTER FIRING • 33 IMMEDIATE ACTION FOR STOPPAGES 34 USEFUL NOTES 36 WATER CONSUMPTION 36 Printed in Great Britain by Gale €, Polden Ud., Aldershol 1944 P-569 ·300 VICKERS MACHINE GUN GENERAL DESCRIPTION PRINCIPLE OF OPERATION The Vickers Machine Gun is recoil operated. 'rt is fed by means of an ammunition belt. It is water cooled. In recoil operation of automatic weapons, often the energy required to operate the mechanism is entirely furnished by the rearward force of the expanding gases of the exploding powder charge. In the Vickers Machine Gun the motive power given to the recoiling mechanism to drive it to the rear is derived partly in this manner and partly by the powder gases which after the exit of the bulle•t impinge on the front cone of the ball firing attachment and rebound violently against the front face of the muzzle cup. At the moment the explosion takes place the breech is firmly locked against the base of the cartridge in the,chamber. The first movement rearward of the recoiling portion of the gun unlocks the breech and the recoiling mechanism is free to move to the rear, and by means of various springs, cams and levers, the necessary mechanical operations are performed whereby the empty case is extracted and ejected, the succeeding live round is extracted from the ammunition feed belt and is fed into the chamber, the gun is cocked, the breech is locked and gun is ready to fire. Once the gun has been loaded with a fully loaded ammunition Plate I ·300 VICKERS MACHINE GuN belt and cocked by hand for the first round, the gun is entirely SIGHTS automatic and will continue to fire round after round so long as A blade foresight is provided and a backsight adjustable for the thumb-piece is pressed, and will stop immediately the windage and elevation is fitted. (See also page 24.) thumb-piece is released or there are no more rounds in the ammunition belt. DATA Weight of gun (water jacket empty) 33¼ lbs. COOLING SYSTEM Weight of gun (water jacket filled) 42 lbs. The heat generated by the continuous firing of the gun is Weight of ammunition belt (loaded 250 absorbed by the water contained in the water jacket which rounds MI ammunition) ... 14¾ lbs. surrounds the barrel, thus the barrel is prevented from over­ Weight of tripod ... 52 lbs. heating. Length of barrel . .. 24½ ins. Muzzle velocity, .303 Mark VII ammuni- TRIPOD MOUNTING tion 2,440 ft. per sec. The gun is mounted on a tripod. The direction and elevation Weight of bullet, .303 Mark VII ammuni- of the gun can be varied at will by the firer by means of the tion 174 grains. elevating and traversing mechanism and movements provided Muzzle velocity, .300 Ml ammunition 2,700 ft. per sec. in the tripod mounting. Weight of bullet, .300 MI ammunition 150 grains. Cyclic rate of fire (approx.) 500 rds. per min. 4 MECHANISM The action of the mechanism will be the more easily followed and learnt if the gun is loaded with an ammunition belt filled with a number of dummy cartridges and the gun should be manipulated to demonstrate the various actions of the mechanism as described in the following text. N.B.-In demonstrating the working of the mechanism with dummy cartridges, the function of the recoiling portions will be the more easily manipulated if the fuzee box and spring is removed. (See" Stripping," p. 14, para. 5.) TO LOAD THE GUN (1) Open the shutter. With the bullets of the dummy cartridges to the front, pass the tag end of the ammunition belt (loaded with dummy cartridges) through the feed block from the right. Grip the tag end of the belt protruding through the left side of the feed block with the left hand. (2) Grasp the crank handle with the right hand and pull it on to the roller ; and with it so held, the left hand grasping the tag end of the belt should give it a sharp pull to the left as far as it will go. (3) Let go the crank handle. The first cartridge is now gripped between the upper and lower portions of the gib at the top of the extractor. (4) By pulling the crank handle back on to the roller again, Plate JI giving the belt another sharp pull to the left and letting the crank handle go forward again the first cartridge will be with­ 1 Barrel casing. 14 Safety catch. 2 Foresight. 15 Thumb-piece. drawn from the ammunition belt and positioned in the chamber 3 Foresight protector. 16 Roller. ready to be fired, and the succeeding round will be gripped by 4 Muzzle attachment. 16a Elevating pin. the gib in the upper part of the extractor. 5 Condenser tube. 17 Shutter catch. 6 Screwed plugs. 17a Check lever bracket. The gun is now cocked and ready to fire. 7 Front cover. 18 Crosshead. 8 Rear cover. 19 Socket (tripod). FIRING THE GUN 9 Check lever. 20 Tripod front legs. (5) On raising the safety catch and pressing the thumb-piece of 10 Crank handle.
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